Home / 18,865.15-28,300.66-5,714.39

Finding the Fourth Proportional to 18,865.15, 28,300.66 and 5,714.39

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Solution

The fourth proportional to 18,865.15, 28,300.66 and 5,714.39 is: 8,572.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.15 : 28,300.66 = 5,714.39 : x
  2. Step 2: Convert to fraction form
    18,865.15/28,300.66 = 5,714.39/x
  3. Step 3: Cross multiply
    18,865.15x = 28,300.66 × 5,714.39
  4. Step 4: Simplify right side
    18,865.15x = 161,721,064.96
  5. Step 5: Solve for x
    x = 161,721,064.96/18,865.15
  6. Step 6: Final answer
    x = 8,572.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.